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Finding the Fourth Proportional to 552,532.16, 762,422.64 and 310,806.56

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Solution

The fourth proportional to 552,532.16, 762,422.64 and 310,806.56 is: 428,872.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,532.16 : 762,422.64 = 310,806.56 : x
  2. Step 2: Convert to fraction form
    552,532.16/762,422.64 = 310,806.56/x
  3. Step 3: Cross multiply
    552,532.16x = 762,422.64 × 310,806.56
  4. Step 4: Simplify right side
    552,532.16x = 236,965,958,004.52
  5. Step 5: Solve for x
    x = 236,965,958,004.52/552,532.16
  6. Step 6: Final answer
    x = 428,872.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.